S
M
T
W
T
F
S
26
76°
57°
27
71°
51°
28
66°
51°
29
80°
58°
30
75°
52°
1
67°
51°
2
64°
45°
3
69°
39°
4
77°
42°
5
78°
55°
6
73°
60°
7
74°
51°
8
69°
46°
9
74°
51°
10
83°
55°
11
67°
48°
12
72°
43°
13
77°
45°
14
71°
49°
15
75°
43°
16
84°
60°
17
90°
63°
18
90°
64°
19
91°
63°
20
92°
67°
21
84°
58°
22
68°
57°
23
75°
60°
24
76°
63°
25
79°
64°
26
80°
63°
27
81°
62°
28
81°
63°
29
82°
60°
30
84°
64°
31
83°
63°
1
84°
65°
2
85°
65°
3
84°
64°
4
79°
64°
5
79°
61°
6
82°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bethlehem
Bethlehem's May 2026 forecast shows daily high temperatures ranging from 68° to 92°, with overnight lows between 57° and 67°. The average high for May is 82° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Bethlehem. See also: June | July | August.
